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Patent Assignment Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Reel/Frame:016427/0646   Pages: 27
Recorded: 08/22/2005
Conveyance: SECURITY AGREEMENT
Total properties: 36
1
Patent #:
5297631
Issue Dt:
03/29/1994
Application #:
08044187
Filing Dt:
04/07/1993
Title:
METHOD AND APPARATUS FOR DOWNHOLE OIL WELL PRODUCTION STIMULATION
2
Patent #:
5439066
Issue Dt:
08/08/1995
Application #:
08266011
Filing Dt:
06/27/1994
Title:
METHOD AND SYSTEM FOR DOWNHOLE REDIRECTION OF A BOREHOLE
3
Patent #:
5711382
Issue Dt:
01/27/1998
Application #:
08506955
Filing Dt:
07/26/1995
Title:
AUTOMATED OIL RIG SERVICING SYSTEM
4
Patent #:
5988299
Issue Dt:
11/23/1999
Application #:
08623041
Filing Dt:
03/28/1996
Title:
AUTOMATED OIL RIG SERVICING SYSTEM
5
Patent #:
6079490
Issue Dt:
06/27/2000
Application #:
09058477
Filing Dt:
04/10/1998
Title:
REMOTELY ACCESSIBLE MOBILE REPAIR UNIT FOR WELLS
6
Patent #:
6168054
Issue Dt:
01/02/2001
Application #:
09200490
Filing Dt:
11/25/1998
Title:
OIL RECOVERY SYSTEM AND APPARATUS
7
Patent #:
6377189
Issue Dt:
04/23/2002
Application #:
09281864
Filing Dt:
03/31/1999
Title:
OIL WELL SERVICING SYSTEM
8
Patent #:
6212763
Issue Dt:
04/10/2001
Application #:
09342564
Filing Dt:
06/29/1999
Title:
TORQUE-TURN SYSTEM FOR A THREE-ELEMENT SUCKER ROD JOINT
9
Patent #:
6276449
Issue Dt:
08/21/2001
Application #:
09533511
Filing Dt:
03/23/2000
Title:
Engine speed control for hoist and tongs
10
Patent #:
6253849
Issue Dt:
07/03/2001
Application #:
09534599
Filing Dt:
03/27/2000
Title:
Method of distinguishing the raising and lowering of tubing and sucker rods
11
Patent #:
6209639
Issue Dt:
04/03/2001
Application #:
09534601
Filing Dt:
03/27/2000
Title:
METHOD OF ENSURING THAT WELL TUBING WAS PROPERLY STRETCHED
12
Patent #:
6213207
Issue Dt:
04/10/2001
Application #:
09535239
Filing Dt:
03/27/2000
Title:
Method of distinguishing between installing different sucker rods
13
Patent #:
6241020
Issue Dt:
06/05/2001
Application #:
09535555
Filing Dt:
03/27/2000
Title:
METHOD OF RECORDING A CROSS-LOAD ON A MOBILE REPAIR UNIT FOR A WELL
14
Patent #:
6164493
Issue Dt:
12/26/2000
Application #:
09566166
Filing Dt:
05/05/2000
Title:
Oil recovery method
15
Patent #:
6374706
Issue Dt:
04/23/2002
Application #:
09768551
Filing Dt:
01/25/2001
Title:
SUCKER ROD TOOL
16
Patent #:
6728638
Issue Dt:
04/27/2004
Application #:
09838857
Filing Dt:
04/23/2001
Publication #:
US20020156582
Pub Dt:
10/24/2002
Title:
METHOD OF MONITORING OPERATIONS OF MULTIPLE SERVICE VEHICLES AT A WELL SITE
17
Patent #:
NONE
Issue Dt:
Application #:
09839080
Filing Dt:
04/23/2001
Publication #:
US20020153134
Pub Dt:
10/24/2002
Title:
Method of managing work orders at a well site
18
Patent #:
NONE
Issue Dt:
Application #:
09839103
Filing Dt:
04/23/2001
Publication #:
US20020156730
Pub Dt:
10/24/2002
Title:
Method of managing billing information at a well site
19
Patent #:
NONE
Issue Dt:
Application #:
09839411
Filing Dt:
04/23/2001
Publication #:
US20020156670
Pub Dt:
10/24/2002
Title:
Method of managing workers at a well site
20
Patent #:
6826492
Issue Dt:
11/30/2004
Application #:
09839444
Filing Dt:
04/23/2001
Publication #:
US20020156591
Pub Dt:
10/24/2002
Title:
METHOD OF MANAGING A WELL FILE RECORD AT A WELL SITE
21
Patent #:
6578634
Issue Dt:
06/17/2003
Application #:
09945924
Filing Dt:
09/05/2001
Publication #:
US20030042020
Pub Dt:
03/06/2003
Title:
METHOD OF MONITORING PUMPING OPERATIONS OF A SERVICE VEHICLE AT A WELL SITE
22
Patent #:
6758095
Issue Dt:
07/06/2004
Application #:
10046688
Filing Dt:
01/16/2002
Publication #:
US20030188584
Pub Dt:
10/09/2003
Title:
TONGS MONITOR WITH LEARNING MODE
23
Patent #:
7006009
Issue Dt:
02/28/2006
Application #:
10113609
Filing Dt:
04/01/2002
Publication #:
US20030183382
Pub Dt:
10/02/2003
Title:
SERVICING SYSTEM FOR WELLS
24
Patent #:
7004456
Issue Dt:
02/28/2006
Application #:
10263630
Filing Dt:
10/03/2002
Publication #:
US20040065874
Pub Dt:
04/08/2004
Title:
ENGINE SPEED LIMITER FOR A HOIST
25
Patent #:
6898985
Issue Dt:
05/31/2005
Application #:
10397796
Filing Dt:
03/25/2003
Title:
METHOD OF DETERMINING THE NORMAL EVAPORATION RATE (NER) AND VACUUM QUALITY OF A CRYOGENIC LIQUID CONTAINER
26
Patent #:
NONE
Issue Dt:
Application #:
10437673
Filing Dt:
05/14/2003
Publication #:
US20040226712
Pub Dt:
11/18/2004
Title:
Portable memory device for mobile workover rig
27
Patent #:
7064677
Issue Dt:
06/20/2006
Application #:
10440633
Filing Dt:
05/19/2003
Publication #:
US20030196798
Pub Dt:
10/23/2003
Title:
METHOD OF MONITORING SERVICE OPERATIONS OF A SERVICE VEHICLE AT A WELL SITE
28
Patent #:
NONE
Issue Dt:
Application #:
10720594
Filing Dt:
11/24/2003
Publication #:
US20040162658
Pub Dt:
08/19/2004
Title:
Crown out-floor out device for a well service rig
29
Patent #:
7221155
Issue Dt:
05/22/2007
Application #:
10760650
Filing Dt:
01/20/2004
Publication #:
US20040196032
Pub Dt:
10/07/2004
Title:
INVENTORY COUNTER FOR OIL AND GAS WELLS
30
Patent #:
7029422
Issue Dt:
04/18/2006
Application #:
10778835
Filing Dt:
02/13/2004
Publication #:
US20040192507
Pub Dt:
09/30/2004
Title:
ERGONOMICS SAFETY WARNING DEVICE AND METHOD TO PREVENT CLUTCH BURNING
31
Patent #:
7228899
Issue Dt:
06/12/2007
Application #:
10778846
Filing Dt:
02/13/2004
Publication #:
US20040188088
Pub Dt:
09/30/2004
Title:
WARNING DEVICE AND METHOD TO PREVENT CLUTCH BURNING
32
Patent #:
7226037
Issue Dt:
06/05/2007
Application #:
10925813
Filing Dt:
08/25/2004
Publication #:
US20060163545
Pub Dt:
07/27/2006
Title:
SYSTEM FOR ASSURING ENGAGEMENT OF A HYDROMATIC BRAKE ON A DRILLING OR WELL SERVICE RIG
33
Patent #:
7461830
Issue Dt:
12/09/2008
Application #:
10942730
Filing Dt:
09/16/2004
Publication #:
US20050114001
Pub Dt:
05/26/2005
Title:
MULTIPLE SENSOR FOR PREVENTING A CROWN-BLOCK INCURSION ON AN OIL WELL RIG
34
Patent #:
7006920
Issue Dt:
02/28/2006
Application #:
10957309
Filing Dt:
10/01/2004
Publication #:
US20050103491
Pub Dt:
05/19/2005
Title:
ACTIVITY DATA CAPTURE SYSTEM FOR A WELL SERVICE VEHICLE
35
Patent #:
7114577
Issue Dt:
10/03/2006
Application #:
11066576
Filing Dt:
02/25/2005
Publication #:
US20050199388
Pub Dt:
09/15/2005
Title:
SAFEMODE OPERATING SYSTEM FOR A DRILLING OR SERVICE RIG
36
Patent #:
NONE
Issue Dt:
Application #:
11087366
Filing Dt:
03/23/2005
Publication #:
US20050252279
Pub Dt:
11/17/2005
Title:
Apparatus and methodology of hydrostatically testing of oil field tubing and casing
Assignor
1
KEY ENERGY SERVICES, INC.
Exec Dt:
07/29/2005
Assignee
1
LEHMAN COMMERCIAL PAPER INC., AS COLLATERAL AGENT
745 SEVENTH AVENUE
NEW YORK, NEW YORK 10019
Correspondence name and address
LATHAM & WATKINS LLP
650 TOWN CENTER DRIVE
SUITE 2000
COSTA MESA, CA 92626

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